# 定义一个列表list
name_list=["itheima","itcast","python"]
print(name_list)
print(type(name_list))

my_list=["itheima",111,True]
print(my_list)
print(type(my_list))

# 定义一个嵌套列表
my_list=[[1,2,3],[4,5,6],[7,8,9]]
print(my_list)
print(type(my_list))
# 元素类型无限制